Try editing 2 lines in administrator/components/com_joomdoc/documents.php
Original:
Line 126:
$query = 'SELECT `file`.`upload`, `file`.`path`, `document`.`id`, `document`.`title`, `document`.`ordering`, `document`.`access`, `document`.`publish_up`, `document`.`publish_down`, `document`.`state` AS `published`, `document`.`checked_out`, `document`.`checked_out_time`, `document`.`created_by`, `document`.`state`, `document`.`favorite`, `document`.`parent_path`, `editor`.`name` AS `editor`, `access`.`' . (J16 ? 'title' : 'name') . '` AS `access_title` ';
Line 135:
$query .= 'LEFT JOIN `#__' . (J16 ? 'viewlevels' : 'groups') . '` AS `access` ON `access`.`id` = `document`.`access` ';
Edited:
Line 126:
$query = 'SELECT `file`.`upload`, `file`.`path`, `document`.`id`, `document`.`title`, `document`.`ordering`, `document`.`access`, `document`.`publish_up`, `document`.`publish_down`, `document`.`state` AS `published`, `document`.`checked_out`, `document`.`checked_out_time`, `document`.`created_by`, `document`.`state`, `document`.`favorite`, `document`.`parent_path`, `editor`.`name` AS `editor`, `access`.`title` AS `access_title` ';
Line 135:
$query .= 'LEFT JOIN `#__' . (J16 ? 'viewlevels' : 'usergroups') . '` AS `access` ON `access`.`id` = `document`.`access` ';
This will fix your error but does not guarantee the whole thing will work. I am still not able to make it work.
